Olives vanoeman



(No Model.)

0, VANORMAN.

DOUBLE TREE.

No. 279,846. Patented June 19,1883.

Ill

UNITED STATES PATEN T Orricn.

OLIVER VANORMAN, OF RAOINE, WISCONSIN, ASSIGNOR OF ONE-HALF TO THEI-IURLBUT MANUFACTURING COMPANY, OF SAME PLACE.

DOUBLE-TREE.

SPECIFICATION forming part of Letters Patent No. 279,846, dated June 19,1883. Application filed March 9, 1853. (No modulo To all whom it mayconcern:

Be it known that-I, OLIVER VANORMAN, of Racine, in the county of Racineand State of Wisconsin, have invented certain new and usefulImprovements in Double-Trees; and I do hereby declare that the followingis a full, clear, and exact description thereof, reference being had tothe accompanying drawings, and to the letters of reference markedthereon, which form a part of this specification.

This invention relates to coupling-irons for connecting whiffletrecswith the double-tree, the object being to provide a simple and cheapform of such irons, adapted to be readily applied, and forming twojoints, one at the double tree and the otherbetween the double-tree andwhiffletree.

The invention consists in a particular form of casting or iron forming aclip intended to centrally embrace the whiffletree, in combination withstraps connecting said clip with the doubletree, together with twobolts, one 0011- necting the clip with the straps and the otherconnecting the straps with the double-tree, th us forming twoindependent joints, as stated.

It also consists in special features of construction of the parts at thepoints where the clip unites with the connectingstrap, as willhereinafter more fully appear.

111 the accompanying drawings, Figure 1 is a perspective view, showingthe end of a doubletree and a portion of awhiflletree-ooupling, togetherwith the irons uniting them, and constructed as proposed by myinvention. Fig.

2 is a view of the clip intended to embrace the whiflletree. Fig. 3 is avertical section through the said coupling and the parts therebyconnected.

A is a double-tree, and B a whiffletree. C C are two straps, connectedto the double-tree by means of a clevis-bolt, D and E is a clipironwhich centrally embraces the whiffletree, and forms a connection for thepivotal attachment of the said straps C thereto by avertical bolt, F.The said clip-iron E is usually a malleable casting, though it may bewrought, and it is formed in the extended shape shown in Fig. 2, whereinit'will be observed that the said iron is curved near its ends'toconform with the curve of the rear face of the whiffletree, whencentrally bent to embrace thelatter,

as shown in Figs. 1 and 2. Said iron is provided with terminal hubs E,having their axes transverse to the general longitudinal axis of bolt F,which passes through the said hubs and the ends of the two strap-ironsG, and which serves both to secure the said straps pivotally to the clipand to bind the clip to the whiffletree. The ends of the hubs E arepreferably extended at e, as shown in the drawings, and are adapted tovfit into recesses 0, formed in the ends of the straps C, so that anytransverse strain will be taken off the bolt F and fall directly 011 thesaid hubs. The ends of thehubs are also preferably made conical, and therecesses c in the ends of the straps of corresponding shape, so thatbytightening the nut f upon the end ofthe bolt F any wear in the partsmay be taken up and a close-fitting joint main tained. The straps O areattached to the double-tree by means of a bolt,- D, which, as

shown in the drawings, is in the form of a feathered clevis-bolt,constructed in a wellknown manner, so that it may be passed throughoblongapertures in the straps C and the double tree, the said strapsbeing reversed when the bolt is inserted, and serving to lock the boltinplace, when they are turned into their normal position, by notches d (1,formed in the feather 011 said bolt. 1

One of the advantages of the construction described is found in the factthat the principal movement of the joint will be at the j unction of thestraps with the clip, wherethe friction is of metal upon metal, and notwholly at the junction of the straps with the doubletree, where themovement of the straps tends to mar the surface of the wood.

By the preferred construction of the connection between the clip and thestraps, embracing the extended hubs and recessed straps, a simple andstrong pivot-joint is formed in which there is no transverse strain onthe connecting-bolt, and which can be readily tightened. Theconstruction of the connection to the whiffietree is rendered verysimple by the use of a single bolt, both to retain the ends of thestraps in place and to clamp the clip around the whit'fletree, whetheror not the peculiar eonstruetion last described is employed.

1 claim as my invention 1. The combination, with the whifl'letree and adouble-tree, of a clip, E, constructed to en circle the whiifletree, andprovided with apertured hubs, straps 0, attached to the d oubletree, anda single pivot and tightening bolt uniting the said straps to theclip-hubs, substantially as described.

2. The combination, with a whiffletree and a double-tree, of a clip, E,provided. with apertured hubs E, straps 0, attached to the doubletree,and having their ends recessed to fit the extensions of said hubs 1*],and a bolt for \Vitnesses:

G. XV. Ronenas, G. B. XVINTER, Jr.

